- =~ cs S eats OSS Fe ae om 
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206 COLUBRIDA, . 
6. Erythrolamprus imperialis. 
"1800p 120 — part., Giinth. Cat. p. 36 (1858), and Zool, Ree, 
1 
a ae its imperialis, Baird § Gir. i. US. Mex. Bound. Surv. 
np pl. xix. fig. 1 (1859) ; Cope, Proc, Ac. Philad. 1861, 
Obie proterops, Cope, Proc. Ac, Philad. 1860, p, 249 ; Bocourt, 
iss. Sc. Mex., Rept. p. 654 (1886). 
rareebnts lateralis, Jan, Arch, Zool. Anat, Phys. ii. p. 804, and 
ay! Gén. 18, pl. v. fig. 3 (1866). 
seg rae fissidens, part., Peters, Mon. Berl. Ac. 1869, p. 876; 
Garm. N. : Ag Rept. p. 62 (1883) ; Giinth. Biol. C-Am., Rept. 
161 (1895) 
Codie imperialis, Cope, Check-list N. Am. Rept. p. 38 Sec 
and Journ, Ac. Philad. (2) viii. 1876, p. 183; Stejneger, Proc 
U.S. Nat. Mus, xiv. 1891, p. 505. 
— lateralis, F. Miill. Verh. Nat. Ges. Basel, vi. 1878, p. 598. 
Riad imperialis, Garm. N. Am. Rept ea 61 (1883). 
ay proterops, Cope, Proc. Amer. Philo (Soe xxii, 1885, 
—— imperialis, Cope, /. c. p. 38 
sestars imperialis, ‘peg Bull, U.S. Nat. Mus, no. 32, 1887, 
Eaawine, Cope, l. ¢. 
Head as in £. fissidens, but smaller. Rostral once and a half to 
once and two thirds as broad as deep, just visible from above ; 
internasals not more than half as long as the prefrontals; frontal 
once and one third to once and a half as long as broad, as long as 
or a little longer than its distance from the end of the snout, shorter 
than the parietals; loreal as long as deep or a little longer than 
deep; one preocular; two postoculars; temporals 142; eight 
(exceptionally seven) upper labials, fourth and fifth (or third and 
fourth) entering the eye; five lower labials in contact with the 
anterior chin-shields, which are as long as or a little shorter than 
the posterior. Scales in 19 rows. Ventrals 120-143; anal 
divided; subcaudals 67-94. Brown above, sides, down to the ends 
of the ventrals, darker; a blackish vertebral line or stripe often 
present; a blackish lateral streak edged above with yellowish on 
the anterior part of the body, and preceded by a yellow round or oval 
spot on the nape; a light line may be present along the outer row 
of scales ; a yellow, black-edged line on each side of the head, from 
the canthus rostralis to the temple; upper lip white, dotted with 
black and edged with black above ; lower parts white, uniform, or 
with black dots, which are most numerous on the throat and neck, 
Total length 405 millim.; tail 160. 
Texas, Mexico, Central America. 
. 9 (V. 126; C. P). Mexico. M. Sallé [C,}. 
b. 2 (V. 128; C. 78). Mexico. 
c, d-e, Yg. (V. 126, Jalapa. Mr. Hoege [C.]. 
135,181; O, 69, 73, 
75). 
